Reconstruction and Analysis of Rollover Crashes of Light Vehicles     

Open
Enrollment
Certificate
Program
ACTAR
Approved

I.D.# C1502Printable Description
Duration: 1 Day
  Delivered in
July 18, 2017 (8:30 a.m. - 4:30 p.m. ) - Tysons, Virginia    

Hotel & Travel Information

For automotive engineers involved in crash reconstruction and analysis, a knowledge of basic accident reconstruction principles and techniques is essential, but often insufficient to answer all of the questions posed by design engineers, regulators, and lawyers. This seminar takes participants beyond the basics of accident reconstruction to physical models and analysis techniques that are unique to the reconstruction of single-vehicle rollover crashes.

The seminar begins by discussing the common characteristics and phases of single-vehicle rollover crashes and giving an overview of the test procedures and data available for developing analysis techniques. The seminar then introduces participants to common types of physical evidence deposited on the roadway and the vehicle during a rollover crash. Participants then learn how to use this physical evidence to reconstruct the motion the vehicle experienced during the crash. Finally, the course introduces the techniques and methods available for analyzing each phase of a single-vehicle rollover crash. This course draws heavily on rollover testing from the literature that has utilized automated steering control and uses these tests to determine the rate of error of common rollover reconstruction techniques. Students will receive a 200-page book on rollover reconstruction that includes a table summarizing the rate of error of the techniques.

This course has been approved by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR) for 7 Continuing Education Units (CEUs). Upon completion of this seminar, accredited reconstructionists should contact ACTAR, 800-809-3818, to request CEUs. As an ACTAR approved course, the fee for CEUs is reduced to $5.00.

This course also qualifies as an elective credit in SAE’s Accident Reconstruction certificate program.

Learning Objectives
By attending this course, you will be able to:

  • Name common characteristics and phases of rollover crashes
  • Describe common rollover test procedures and the data they offer for reconstruction
  • Identify and document common types of physical evidence from rollover crashes
  • Use physical evidence to reconstruct the motion of a vehicle involved in a rollover crash
  • Estimate the rate at which a vehicle will decelerate during each phase of a rollover crash
  • Calculate the speed a vehicle was traveling during each phase of a rollover crash
  • Determine what steering and braking inputs a driver utilized before a rollover
  • Quantify the forces applied to a vehicle when it impacts the ground during a rollover
  • Analyze the trajectory of an occupant that was ejected during a rollover
  • Quantify the rate of error of common reconstruction techniques for rollover

Who Should Attend
This course is designed for accident reconstructionists and engineers. Individuals with a strong background in crash reconstruction, but new to or inexperienced in the specialized area of rollover crash reconstruction, will benefit the most from the course material. Many of the techniques will also be applicable to other crash types, and will therefore also benefit anyone looking to deepen their understanding of crash reconstruction.

Prerequisites
An undergraduate engineering degree or a strong background in crash reconstruction is recommended. A basic knowledge of college algebra, college physics, and familiarity with common analysis techniques used in crash reconstruction will be assumed.

Topical Outline

  • Types of Rollover Crashes and Rollover Statistics
  • General Characteristics of Rollover Crashes
    • Test Methods and characteristics; field relevance
  • Physical Evidence from Rollover Crashes
    • Scene evidence and documentation - photogrammetry to locate evidence
    • Vehicle evidence and documentation
  • Analysis Methods – Rollover Phase
    • Average deceleration rates - dependence on surface and vehicle type?
    • Non-constant deceleration models
    • Evaluating roll motion from physical evidence – glass; scratch patterns; rim gouges
    • Typical rollover characteristics - # of rolls v. rollover distance; typical roll velocity curves
    • Roof-to-ground impact model - testing and validation
    • Simulation - PC-crash; HVE; validation considerations of simulation software
  • Analysis Methods – Trip Phase
    • Physical evidence
    • Analytical models: equations - static stability factor, increasing the complexity and accuracy; estimating the center of gravity height; estimating the roll moment of inertia; trip duration
    • Simulation: PC-crash; HVE; validation considerations of simulation software
  • Analysis Methods – Pre-Trip Phase (Loss-of-Control)
    • Tire marks
    • Striations and their meaning - uncertainty and sensitivity analysis
    • Calculating speed loss
    • Is the critical speed equation applicable?
    • Testing - validation of striation analysis; validation of speed loss equations

Instructor(s): Nathan Rose & Gray Beauchamp
“Nathan
Mr. Rose is currently a Director and Principal Engineer focusing on vehicular accident reconstruction at Kineticorp, LLC, a Denver-based forensic engineering firm that he helped found in 2005. He has been working and conducting research in the field of accident reconstruction for more than 18 years. Mr. Rose has reconstructed hundreds of rollover crashes, conducted extensive research and testing related to rollover crashes and has published numerous articles and technical papers, of which ten have been published by SAE. He holds a B.S. in Civil Engineering and a M.S. in Mechanical Engineering.

“Gary
Mr. Beauchamp is a Principal Engineer focusing on vehicular accident reconstruction at Kineticorp, LLC. He has been working and conducting research in the field of accident reconstruction since 2003. Mr. Beauchamp has published numerous technical papers and articles related to accident reconstruction. The majority of his research has focused on the various phases of single vehicle loss-of-control crashes including controllability following tire disablements, tire mark interpretation, vehicle trip dynamics and rollover dynamics. Much of his work has involved full scale vehicle testing. Gray holds a B.S. and M.S. in Mechanical Engineering and is a Professional Engineer in the state of Colorado.

Fees: $810.00 ; SAE Members: $648.00 - $729.00

.7 CEUs
You must complete all course contact hours and successfully pass the learning assessment to obtain CEUs.

To register, click Register button at the top of this page and submit the online form, or contact SAE Customer Service at 1-877-606-7323 (724/776-4970 outside the U.S. and Canada) or at CustomerService@sae.org.